I have already demonstrated the power of using a tool such as Exceler8 to export data to Excel. This short video steps you through the process of exporting to Excel, then linking that data to another Excel workbook. The thing I like about this, is that you keep the data moving all the time. Whilst it can get complicated on large datasets its a useful process to get accustomed to. Also, if you update your data in Revit, just export to Excel, over writing the first Excel sheet the second sheet will reflect that change.